Unexpected p-type thermoelectric transport arising from magnetic Mn substitution in Fe<sub>2</sub>V<sub>1−<i>x</i></sub>Mn<sub><i>x</i></sub>Al Heusler compounds
Rajveer Jha, Naohito Tsujii, Fabian Garmroudi, Sergii Khmelevskyi, E. Bauer, Takao Mori
Abstract
An anomalous p-type thermopower was realised for nominally n-doped Fe 2 V 1− x Mn x Al, via localized magnetic Mn impurity states at the band edges. A relatively large power factor 2.2 mW K −2 m −1 and ZT ∼ 0.1 could be obtained for the p-type full Heuslers.
Topics & Concepts
Substitution (logic)Thermoelectric effectHeusler compoundCondensed matter physicsManganeseType (biology)Materials scienceChemistryPhysicsThermodynamicsMetallurgyGeologyComputer scienceFerromagnetismPaleontologyProgramming languageHeusler alloys: electronic and magnetic propertiesAdvanced Thermoelectric Materials and DevicesWireless Power Transfer Systems